airbus MCDU WIND FORECAST
 

my question is what & how ,wind inputs data on Airbus MCDU PERF page (DES FORECAST) affect on flight?i mean which part of flight system ?
tanx

the wind forecast does not "affect a system" it rather gives the FM of the FMGS a way to predict FUEL and TIME to waypoints thus your final destination predictions.

Only the TO WAYPOINT gets the current wind from the ADIRS.

How it is done is just MATH Triangle of velocities. TAS, HDG, TRK, Wind, GS.

I hope this helps understanding better this feature.

Farid

It affects to the FMGC calculated descent profile.
With a headwind, the profile will be steeper. With a tailwind, shallower.

Try inserting headwinds and tailwinds and see how the T/D moves

thank you for reply